9-letter words containing r, y, b, i
- ytterbite — (obsolete) Gadolinite: a black, vitreous mineral consisting primarily of silicates of various rare earths including ytterbium.
- ytterbium — a rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb; atomic weight: 173.04; atomic number: 70; specific gravity: 6.96.